Add a test program, tri-test

This program tests whether the new triangle support works.

2 files changed, 52 insertions, 2 deletions

diff --git a/demos/Makefile.am b/demos/Makefile.am
index 2dcdfd3..f08303b 100644
--- a/demos/Makefile.am
+++ b/demos/Makefile.am
@@ -3,7 +3,7 @@ if HAVE_GTK
 AM_CFLAGS = @OPENMP_CFLAGS@
 AM_LDFLAGS = @OPENMP_CFLAGS@
 
-LDADD = $(GTK_LIBS) $(top_builddir)/pixman/libpixman-1.la -lm 
+LDADD = $(top_builddir)/pixman/libpixman-1.la -lm $(GTK_LIBS)
 INCLUDES = -I$(top_srcdir)/pixman -I$(top_builddir)/pixman $(GTK_CFLAGS)
 
 GTK_UTILS = gtk-utils.c gtk-utils.h
@@ -17,7 +17,8 @@ DEMOS =				\
 	alpha-test		\
 	screen-test		\
 	convolution-test	\
-	trap-test
+	trap-test		\
+	tri-test
 
 gradient_test_SOURCES = gradient-test.c $(GTK_UTILS)
 alpha_test_SOURCES = alpha-test.c $(GTK_UTILS)
@@ -28,6 +29,7 @@ trap_test_SOURCES = trap-test.c $(GTK_UTILS)
 screen_test_SOURCES = screen-test.c $(GTK_UTILS)
 convolution_test_SOURCES = convolution-test.c $(GTK_UTILS)
 radial_test_SOURCES = radial-test.c ../test/utils.c ../test/utils.h $(GTK_UTILS)
+tri_test_SOURCES = tri-test.c ../test/utils.c ../test/utils.h $(GTK_UTILS)
 
 noinst_PROGRAMS = $(DEMOS)
 
diff --git a/demos/tri-test.c b/demos/tri-test.c
new file mode 100644
index 0000000..ff4779e
--- /dev/null
+++ b/demos/tri-test.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "../test/utils.h"
+#include "gtk-utils.h"
+
+int
+main (int argc, char **argv)
+{
+#define WIDTH 200
+#define HEIGHT 200
+
+#define POINT(x,y)							\
+    { pixman_double_to_fixed ((x)), pixman_double_to_fixed ((y)) }
+    
+    pixman_image_t *src_img, *dest_img;
+    pixman_triangle_t tris[4] =
+    {
+	{ POINT (100, 100), POINT (10, 50), POINT (110, 10) },
+	{ POINT (100, 100), POINT (150, 10), POINT (200, 50) },
+	{ POINT (100, 100), POINT (10, 170), POINT (90, 175) },
+	{ POINT (100, 100), POINT (170, 150), POINT (120, 190) },
+    };
+    pixman_color_t color = { 0x4444, 0x4444, 0xffff, 0xffff };
+    uint32_t *bits = malloc (WIDTH * HEIGHT * 4);
+    int i;
+
+    for (i = 0; i < WIDTH * HEIGHT; ++i)
+	bits[i] = (i / HEIGHT) * 0x01010000;
+    
+    src_img = pixman_image_create_solid_fill (&color);
+    dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, bits, WIDTH * 4);
+    
+    pixman_composite_triangles (PIXMAN_OP_ATOP_REVERSE,
+				src_img,
+				dest_img,
+				PIXMAN_a8,
+				200, 200,
+				35, 5,
+				ARRAY_LENGTH (tris), tris);
+    show_image (dest_img);
+    
+    pixman_image_unref (src_img);
+    pixman_image_unref (dest_img);
+    free (bits);
+    
+    return 0;
+}